September 2003
Intermediate to advanced
304 pages
8h 39m
English
Content preview from Wireless Hacks
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Deep Dish Cylindrical Parabolic Reflector
This simple design provides high gain without pigtails or modifying your AP.
I needed a parabolic reflector to eliminate off-property coverage. This design can reduce signal from some areas while enhancing signal in other areas. I designed this reflector to be installed in outdoor enclosures with WAP-11 access points, but it is becoming quite popular with people building indoor LANs, as well as with people building very short point-to-point links. This design offers very high performance and easy availability (scissors, tape, cardboard, tin foil, and 20 minutes, and you are in business). See it in action in Figure 5-1.
Figure 5-1. Add a reflector without modifying the AP.
This antenna is so easy to make, tune, and install, and it performs so well, that it is foolish not to try one before electing to purchase a commercial antenna, if for no other reason than you can check to see whether you are purchasing enough commercial antenna gain to make the link you want to make.
Advantages over other antennas:
No pigtail [Hack #66] required
No modification to AP (no voiding of warranty)
No matching (SWR) problems
No purchased parts
Trivially easy construction
Very low probability of error
As good as or better performance than the Pringles can antenna [Hack #72]
Superior front-to-back/front-to-rear ratio
Improves wireless LAN privacy
Reduces interference
This ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.